Sheet metal roofing



Oct. 7, 1941. G, J KEY `2,258,509

EEEEEEEEEEEEEEE NG tudinal 'narrow v Patenixed `Oct.' 1941 UNITED STATES `PATENT OFFICEy I l i 2,258,509 i i SHEET METAL RooriNG Gabriel J. Key, Arafat', N. o. Application August 19, 1940, Serial No. 353,285v v(o1. 10s- 22) i This invention relates to sheetmet'al roofing,

n 1 Claim.

and its general object is to provide an interlocking lap joint for metallic roofing sheets and the like, in which the joint portions are shaped and interlocked in a manner lto n'otonly bring about concealment or covering of the edges of the sheet and the fastening nails therefor, but to prevent any possibility of seepage of water between'the joint-portions or 'casual separation or displacement thereof, due to expansion and contraction or wind, with they `result m-y ljoint is retained weathertight under all conditions.

A further object is to provide a `lap joint for metallic roong sheets, which makesit possible to lay the sheets and to fastenthe same in an easy and expeditious manner, and notwithstanding the many advantageous features of the joint,

it is very simple in construction, thus sheets or shingles including my joint portions can be inexpensively manufactured.V f

This invention also consists in certain `other and outer ridges 2 and 4 may be of the same height the intermediate or middle ridge 3 is of less height than-the other two, andthe metal from the apex of the'inner ridge 4 is .crimped I together to provide a double thickness and folded downwardly /toward the inner sloping wall of the .ridge 4, lbut is spaced therefrom to form a longitudinally vextending channel hook '6 throughout the length of the sheet, as will be apparent.

Both of the outerwalls of each of the ridges or corrugations 2 and 4 are of the same height, so that the at outer V portion 5 and the flat intermediate or body portion 1 of the sheet are norfeatures of construction and in the combination j and arrangement of the several parts, to be herey inafter fully described, illustrated in the accompanying drawing and specifically pointed out in the appended claim.

In describing the invention detail, refer-v ence will be had to the accompanying drawing wherein like characters denote like or corresponding parts throughout the several views, and in\ which:

Figure 1 is a fragmentary perspective view il- `lustrating roofing sheets constructed in accords ance with the present invention and laid and fastened to provide, a roof. I n

Figure 2 is a fragmentary perspective view of one of the sheets.

Referring to the drawing in detail, the letter A indicates the usual sheathing upon which the sheets are laid and fastened by nails yor the like B ,to provide .the roof, and while have illusmally on the samelevel, as clearly shown in Figure 2, and the sheet is shaped adjacent to its `opposite longitudinal edge to form an Ainverted .cross sectional substantially Vshaped ridge -8 having an inner sloping wall of substantially the f when so disposed, the nat portion s of the seotrated three sheets for that'purpose, 'as shown y in Figure 1, and having my joint portions formed thereon, with the companion portions of adjacent sheets overlapped and interlocked, each sheet is I' identical, and is best Ishown in Figure 2.

Each sheet which is preferably of elongated l rectangular formation, is broadly indicated by the reference numeral l and is shaped byl any method to form three longitudinally extending inverted cross sectional assembly V-shaped par-v allel arranged ridges 2, 3 a'nd 4, merging one into the other and disposed adjacent one longiedge of thesheet tol provide'a relatively flat' outer portion 5. While the inner vfiat outer portions 5 only,

same height as that of the sloping` walls'of the ridges 2 and l, but the outer sloping wall of the ridge 8 terminates at its lower longitudinal edge, a considerable distance above the inner sloping Wallv thereof, and has formed on its lower edge an elevated hat portion 9 from which extends an upwardly directed outwardly sloping ange I0. From the labove description and the disclosure in the drawing, particularly Figure l, itis believed that the manner of laying the sheets and interlocking the joint portions together,1w`ill be obvious; but it might be mentioned that .the sheets are laid on the. sheathing A and fastened by nails B or the like, which extend through the and after one sheet is laid and-ffastened, the adjacent sheet is interlocked therewith, by placingthe ange I U with- `in the hook s of the first sheet, for disposal of the flange between the inner sloping wall of the inner ridge l and the hoolnfor` the latter vto set up a clamping en'gfment with the flange.

ond sheet restsupon'the middleY ridge 3 of "the first sheet and the slopingy walls of the ridge 8 rest upon the sloping walls of the outer ridge -2, for the dis'posal of the body portion 'I of the second sheet upon the ilatouter portion 5 of the first sheet for covering the same and conse- Y the sheets, as well as the nails are completely l covered, as clearly shown in Figure 1.

It is thought from the foregoing description that the advantages and novel features of the invention will be readily apparent.

It is to be understood that changes may be made in the construction and in the combination and arrangement of the several parts, provided that such changes fall within the scope of the appended claim.

What I claim is:

In a joint for metallic roofing sheets, each sheet being formed with inner, intermediate and outer parallel ridges adjacent one edge thereof, the intermediate ridge being of less height than the inner and outer ridges and each of the ridges being of inverted cross sectional substantially V-shape, an outer at portion extending from the outer ridge to said edge and adapted to receive fastening means, channel hookmeans formed along the inner ridge and extending downwardly from the apex thereof toward the intermediate ridge for disposal in spaced relation with respect to the inner wall of the inner ridge, a single ridge adjacent the opposite edge of the sheet and being of inverted cross sectional substantially V-shape,

said single ridge having a short outer wall, an inner flat portion between the single ridge and said inner ridge, a flat portion formed on the short Wall of the single ridge to be elevated above the other flat portions and extending outwardly from the short wall, a ange formed on the elevated at portion and extending at an inclination outwardly and upwardly therefrom, and the flange of one sheet adapted to be clamped between the hook means and the inner wall of the inner ridge of an adjacent sheet for disposal of the elevated flat portion of the rst sheet upon the intermediate ridge and between the inner and outer ridges of the second sheet, as well as the single ridge upon the outer ridge and the inner iiat portion of the second sheet upon the outer at portion of the first sheet.

GABRIEL J. KEY. 

